The Next Eco-Catastrophe?

Billions of bees have done just that, leaving the crop fields they are supposed to pollinate, and scientists are mystified about why.

The phenomenon was first noticed late last year in the United States, where honeybees are used to pollinate $15 billion worth of fruits, nuts and other crops annually. Disappearing bees have also been reported in Europe and Brazil.

Commercial beekeepers would set their bees near a crop field as usual and come back in two or three weeks to find the hives bereft of foraging worker bees, with only the queen and the immature insects remaining. Whatever worker bees survived were often too weak to perform their tasks.

If the bees were dying of pesticide poisoning or freezing, their bodies would be expected to lie around the hive. And if they were absconding because of some threat — which they have been known to do — they wouldn’t leave without the queen.

Since about one-third of the U.S. diet depends on pollination and most of that is performed by honeybees, this constitutes a serious problem, according to Jeff Pettis of the U.S. Agricultural Research Service…

There have been other fluctuations in the number of honeybees, going back to the 1880s, where there were “mysterious disappearances without bodies just as we’re seeing now, but never at this magnitude,” [according to May Berenbaum, an insect ecologist at the University of Illinois, Urbana-Champaign].

In some cases, beekeepers are losing 50 percent of their bees to the disorder, with some suffering even higher losses. One beekeeper alone lost 40,000 bees, Pettis said. Nationally, some 27 states have reported the disorder, with billions of bees simply gone.